From the Pulitzer Prize-winning culture critic for Time magazine comes the tremendously controversial, yet highly persuasive, argument that our devotion to the largely unexamined myth of egalitarianism lies at the heart of the ongoing "dumbing of America."

Americans have always stubbornly clung to the myth of egalitarianism, of the supremacy of the individual average man. But here, at long last, Pulitzer Prize-winning critic William A. Henry III takes on, and debunks, some basic, fundamentally ingrained ideas: that everyone is pretty much alike (and should be); that...